Pitman and spreader.



R. A. GALLY.

PITMAN AND SPREADER. APPLICATION FILED EM. 9. 191B.

1,2722%. Patented July 9,1913.

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ROBERT A. GALLY, OF CINCINNATI, OHIO, ASSIGNOB T0 THE BALDWIN COMPANY, 013

- CINCINNATI, QHIO.

.PI'I'IVIAN AND SEREADER.

Original application filed July 30, 1917, Serial To all whom it may concern:

Be it known that 1, ROBERT A. GALLY, a citizen of the. United States, and residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Pitmen and Spreaders, of which the following is a specification.

In this applicants prior application #4113 1, is shown a spring spreader push- 'to allow a clear view of crank and crank block and the spreaders; and Fig. 2 is a larger scale view of one of the spreaders showingthe bends at its ends.

Four pumpers 1 are shown attached to the four inner faces of a rectangular frameor box 2 which has wind Ways 3 leading from all four of said pumpers to a common service port 4 adapted to be connected to any suitable apparatus to be affected by the air service to or from this motor or pump, the apparatus being usable as either a motor or pump, suitable valves being provided to each pumper, of the present structure hereof, only the outer valves Sbeing shown.

A. crank 6 is revoluble about a central shaft 7, and on this crank 6 is mounted a .ingle floating crank block 8 to which are attached four flexible pitmen 9 made of strong leather or other suitable material, each of which pitmen 9 is attached to its corresponding one of the pumpers 1 on a block 10 attached to said pump. The crank block 8 has four arms of a cross arrangement, each such arm having a slot for receiving a pitman 9.

A spreader 11 is placed from one pumper 1 to the opposite pumper 1 of each pair of opposed pumpers. The two ends 12 of each of these spreaders 11 have their axes parallel to the hinge lines of their pumpers and to the axis of the crank shaft 7 and its crank 6; so that as the pumpers 1 are moved by their pitman 9 and the crank block 8 Specification of Letters Patent.

No. 183,576. Divided. and this application filed January 9,

Serial No. 211,080.

and crank 65, these Spreaders 11 have free action and their ends 12 are slightly revolved in their hearings in blocks 13 and 14, blocks 18 being each mounted directly on its one of one pair of opposed pumpers, the springs 15 pressing the opposed pumpers apart and thus holding the pitmen taut and the crank block snug to its crank. Thus any sliding or wearing of longitudinal motion of the spreader rods is avoided, being much superior to the sliding rods of the prior application #thliit, referred to above.

Each end 12 of each spreader 11 is not only put at right angles to the main part 11 of the same spreader, but there is preferably a second bend or ofiset made intermediate the length of each rod 11 to secure a clearance of such spreader 11 from the crank shaft 7 and yet have each end 12 of each spreader 11 at the same distance from the hinge of the pumper 1 to which it is attached as is the end 12 of that same spreader 11 from the hinge of the pumper 1 to which that other end 12 of that spreader 11 is attached. If it were not for this special bend or offset, these two ends 12 at equal distances from the hinges of the two opposed pumpers to which a spreader was attached would bring the main part of such a spreader directly across the axis of the crank shaft 7, a mechanical impossibility.

While a spring is very useful. with ordinary stiif pitmen as in the prior application #41,13t, it is even more necessary with flexible pitmen, for a flexible pitman has no proper and certain control of the return movement of the pumper, not being capable of a proper movement if its flexibility is sufiicient for free working on its pulling movement from its fixed ends in the blocks 8 and 10.

Flexible pumper connections and pitmen are old in reed and pipe organs, but the details of spring spreaders, as well as the combination of flexible pitmen and spring spreaders are novel, and which had been previously set forth with other matter in my application #183,576 from which this application is divided, but not claimed therein,'-'but are the matters of what I new claim as my invention, which is 1. Two opposed hinged pumpers; a revoluble crank therebetween; pitlnen from said crank to each said pumper; and a spreader rod between the said two pumpers and attached to both said pumpers at the ends of said rod each said end of said rod having its extreme part at a right angle to the main part of said rod and the axis of each said right angl -end 'part parallel to the hinge ines f t wo. Pamper '2. Two opposed hinged punipers; a revoluble crank therebetween; pitnien from said crank to each said puinper; and a spreader between the two said ampers and attached to both said pnlnpers; the said attachment to one of saidpnn pers comprising a spring directly mounted on said pinnper and sup{ porting its end of the said spreader.

3; Two opposed hinged pnmpers; a revolnbl'e crank therebetween; pitmen from said crank to each said pninper; and a spreader between the two said punipers and attached to both said pulnpers, the said attachment to tone ofsaid puinpers comprising an expansion spring directly niounted on said purnper and supporting its end of the said spreader. i

4,. Two opposed puinpers; a revolnble shaft having a cranktherewith and between the] said two p irn'pers; pit nen from said ran each d Pumper; and a spreader, between the said twopnrnpers, th d of sa dspreader attached to both said p nnpers,

the positions of said ends being on a line extended through said shaft, the intermediate part of. said; spreader offset to one side of the said shaft. i i

51 Two opposed puinpers; a revoluble shaft having a crank therewith and between the said two puinpers; flexible pitnien from said crank to each said pumper; and an expansion spreader between the said two pinnpers and attached to both the said pumpers.

6. Two opposed pumpers; a revoluble shaft having a crank therewith and between the "said two puinpers; a floating crank block jonrnaled on said crank; and flexible pitinen from said crank to each said pumper; and an expansion spreader between the said two pulnpers and attached to b th the said punipers. ii i i if Y A revolnble shaft having a crank therewith; four piinipers disposed in rectangular arrangement around said shaft and crank; a floating crank block j ournaled on said crank; a flexible pitrnan from each said pumper to the said floating crank block; the said four pumpers disposed in two pairs,

each pair. at opposed sides of the said rectangle, and two expansion Spreaders, each one of said spreaders attached to its pair of opposed punipers.

8. A revolu bleshaft having a crank therewith; four pumpers disposed in rectangular arrangement around said shaft and crank; a floating crank block jonrnaled on said crank; a pitrnan from each saidpun per t0 Copies ofthis patent may be obta ined for five cents each, by addressing the fcoznmissipncr of Patents 

